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