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