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