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