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