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