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