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