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