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