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