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