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