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)(17,18,21,26)(19,25,29,23)(20,24,22,27)(28,32,30,31)(1,3,5,4)(2,6,7,8)(9,11,13,10)(12,15,16,14)(19,28)(20,22)(23,31)(24,27)(25,32)(29,30)(1,4,5,3)(2,6,7,8)(10,11)(14,15)(17,19,21,29)(18,23,26,25)(20,28,22,30)(24,31,27,32)(9,12,13,16)(10,14,11,15)(17,20,21,22)(18,24,26,27)(19,28,29,30)(23,31,25,32)(17,19,21,29)(18,25,26,23)(20,28,22,30)(24,32,27,31)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.