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