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