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