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