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