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