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