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