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