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