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