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