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