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