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