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