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