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