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