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