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