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)(19,25,27,23)(20,24,28,29)(26,31,32,30)(1,2)(3,7)(4,5)(6,8)(10,14)(12,15)(18,21)(23,25)(24,29)(30,31) involution — undirected(2,5)(6,7)(10,14)(11,16)(20,28)(24,29)(26,32)(30,31) involution — undirected(9,11,13,16)(10,15,14,12)(17,19,22,27)(18,23,21,25)(20,26,28,32)(24,30,29,31)(1,2)(3,6)(4,5)(7,8)(9,10)(11,15)(12,16)(13,14)(17,20)(18,24)(19,26)(21,29)(22,28)(23,30)(25,31)(27,32) involution — undirected(1,3)(2,6)(4,8)(5,7)(9,12,13,15)(10,16,14,11)(17,21,22,18)(19,25,27,23)(20,29,28,24)(26,31,32,30)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.