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