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