Drivers to BOB:

 Flexible PC wire (gotten from old PSUs), ferrule at both ends, and a male-female connector in the middle for easy wiring plug / unplug. The hard thing is that all PUL-, DIR- and STEP- are going to enable. There is only one enable pin on the BOB, so that's 3 to 1 wire per driver, and a total of 112 wires going into one screw terminal block.. there's just no way this is going to work.
Where do you get this info from? Have you a link to the BOB? Have you drawn a schematic of what you are trying to achieve ?
Do a search on the forum for control boxes.