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)(11,15)(12,13)(14,16)(17,18)(19,21)(20,22)(23,24) involution — undirected(2,6)(7,8)(9,10)(11,14)(12,13)(15,16)(17,19,23,20)(18,21,24,22)(1,3,5,4)(2,7,6,8)(10,13)(14,15)(17,20,22,18,23,19,21,24)(1,3,5,4)(2,7,6,8)(9,11,12,16)(10,14,13,15)(17,19,22,24,23,20,21,18)(1,4,5,3)(2,7,6,8)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.