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