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