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