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