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