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