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