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