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