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