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)(15,20)(19,21)(23,24) involution — undirected(9,11,12,20,14,21,13,23)(10,15,16,18,17,24,22,19)(2,5)(6,8)(9,10)(11,18)(12,16)(13,22)(14,17)(15,23)(19,21)(20,24) involution — undirected(9,10)(11,19)(12,16)(13,22)(14,17)(15,20)(18,21)(23,24) involution — undirected(1,3,4,7)(2,6,5,8)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.