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