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