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