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