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