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