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