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