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