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