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