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