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