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