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