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