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