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