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