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