One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,7,4,6)(9,10)(11,14)(12,16)(13,15)(18,23)(24,26)(25,30)(31,32)(1,3,5,4)(2,6,8,7)(9,11,13,12)(10,14,15,16)(17,18)(19,25)(20,26)(21,23)(22,24)(27,31)(28,30)(29,32)(1,3,5,4)(2,7,8,6)(10,15)(14,16)(18,24)(19,27)(20,22)(23,26)(28,29)(31,32)(9,12,13,11)(10,16,15,14)(17,19,21,28)(18,25,23,30)(20,29,22,27)(24,31,26,32)(1,4,5,3)(2,6,8,7)(17,20)(18,23)(21,22)(25,31)(27,29)(30,32)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.