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