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