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