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