Please help professional electricians to design the wiring diagrams, see additional details

First of all: equipment wiring can not just think about saving money, safety is the most important. Suggest that you install a distribution box, into the line three-phase five-wire, phase line minimum 10 square copper wire (aluminum line to the next level), set up a total air switch to control five pieces of equipment, respectively, the total air switch to choose 100A with earth leakage protection, CNC switches 25A, the rest of the equipment are set up 16A switch, the sander is a single item, if you want, the installation of a single P16 switch can be (and then spare a 25A switch backup, you want to think of the money if you can not install).

The line is not a single switch, but a single P16 switch.

Line laying: each device from the distribution box to pull out a line to the nearest position of the equipment power supply interface to install the 86 junction box, from the junction box with a snakeskin hose lead to the equipment junction box. Equipment with a plug, then directly install the socket panel to the junction box. CNC with 4 square copper wire, zero ground optional 2.5 square copper wire, diameter 32 PVC pipe laid. The rest of the equipment with 2.5 square copper wire, diameter 25 PVC pipe laid, sanders single then three lines (phase, zero, ground) 20 of the pipe can be. Zero ground line should be connected reliably, the ground line is to ensure safety.

The room is not big, if you buy materials 1500 should be enough.