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