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