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