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