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