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