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)(17,18)(19,23)(20,24)(21,26)(22,25)(27,30)(28,31)(29,32)(2,5)(6,8)(9,11,13,12)(10,14,15,16)(19,20)(21,27)(23,24)(26,30)(28,29)(31,32)(9,12,13,11)(10,14,15,16)(17,19)(18,23)(20,27)(21,29)(22,28)(24,30)(25,31)(26,32)(17,20,22,29)(18,24,25,32)(19,27,28,21)(23,30,31,26)(1,3,4,7)(2,6,5,8)(18,25)(23,31)(24,32)(26,30)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.