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