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