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