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