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