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