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