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