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