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