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