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