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)(11,16)(12,14)(13,15)(17,18,23,25,22,27,20,30)(19,21,28,32,29,24,26,31)(2,5)(3,7)(17,19)(18,24)(20,26)(21,27)(22,29)(23,28)(25,31)(30,32) involution — undirected(9,11,13,12)(10,14,15,16)(17,20,22,23)(18,25,27,30)(19,28,29,26)(21,31,24,32)(1,3,4,7)(2,6,5,8)(9,12,13,11)(10,14,15,16)(19,29)(21,24)(26,28)(31,32)(2,5)(6,8)(17,21,23,32,22,24,20,31)(18,26,25,19,27,28,30,29)A 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.