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