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