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