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