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