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