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