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