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