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