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