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