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