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