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