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