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