One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,3)(4,6,8,7)(9,10,13,16)(11,14,12,15)(17,18)(19,24)(20,22)(21,23)(25,26,30,31)(27,32,29,28)(2,3)(6,7)(9,11,13,12)(10,14,16,15)(17,19,22,21)(18,23,20,24)(25,27,30,29)(26,28,31,32)(4,8)(6,7)(19,21)(23,24)(26,31)(27,29) involution — undirected(1,3,5,2)(4,7,8,6)(9,10)(11,14)(12,15)(13,16)(17,20,22,18)(19,23,21,24)(25,28,30,32)(26,27,31,29)(1,4,5,8)(2,6,3,7)(9,12,13,11)(10,15,16,14)(17,21,22,19)(18,23,20,24)(25,29,30,27)(26,32,31,28)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.