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