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