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