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