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