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