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