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