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