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