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