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