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