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