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