One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,6)(3,7,4,8)(9,10,12,14)(11,13,15,16)(17,18,21,25)(19,27,28,23)(20,30,26,22)(24,31,32,29)(2,6)(7,8)(9,11)(10,13)(12,15)(14,16)(17,19,21,28)(18,23,25,27)(20,24,26,32)(22,31,30,29)(1,3,5,4)(2,7,6,8)(17,20,22,18,21,26,30,25)(19,23,29,24,28,27,31,32)(1,3,5,4)(2,7,6,8)(11,15)(13,16)(17,19,22,29,21,28,30,31)(18,24,26,27,25,32,20,23)(1,4,5,3)(2,7,6,8)(18,25)(20,26)(23,27)(24,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.