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