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