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