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