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