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