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