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