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