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