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