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