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