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