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