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