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