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