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