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