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