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