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