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