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