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