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