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