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