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