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