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