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