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)(11,15)(12,14)(13,16)(17,18,24,28)(19,25,30,20)(21,26,29,32)(22,27,23,31)(1,3,6,2)(4,8,5,7)(9,11,12,16)(10,13,14,15)(17,19)(18,25)(20,28)(21,22)(23,29)(24,30)(26,27)(31,32)(11,16)(13,15)(17,20,22,26,24,25,23,32)(18,21,31,30,28,29,27,19)(1,4,6,5)(2,7,3,8)(10,14)(13,15)(17,21,24,29)(18,26,28,32)(19,22,30,23)(20,31,25,27)(1,5,6,4)(2,7,3,8)(17,22,24,23)(18,27,28,31)(19,29,30,21)(20,26,25,32)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.