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