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