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