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