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