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