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