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