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