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