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