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