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