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)(11,15,16,13)(17,18,21,19)(20,25,28,23)(22,24,29,26)(27,31,30,32)(2,6)(7,8)(9,11,12,16)(10,13,14,15)(18,19)(20,27)(22,29)(23,31)(25,32)(28,30)(1,3,5,4)(2,7,6,8)(10,14)(11,16)(17,19,21,18)(20,25,28,23)(22,26,29,24)(27,31,30,32)(1,3,5,4)(2,7,6,8)(10,14)(13,15)(17,20,21,28)(18,23,19,25)(22,30,29,27)(24,31,26,32)(1,4,5,3)(2,7,6,8)(10,14)(13,15)(18,19)(23,25)(24,26)(31,32)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.