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