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