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