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