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