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