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