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