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