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