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