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