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