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