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