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)(11,14)(17,18)(19,25,27,32)(20,24)(21,23)(22,26,30,28)(29,31)(1,2,7,13,5,9,4,6)(3,8,14,16,11,15,10,12)(17,19,20,28,21,27,29,26)(18,22,24,32,23,30,31,25)(1,3,4,10,5,11,7,14)(2,8,6,12,9,15,13,16)(3,11)(8,15)(10,14)(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.