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)(19,21)(20,28)(22,23)(24,26)(25,30)(27,31)(29,32)(1,3,6,5)(2,7,4,8)(9,10,12,14)(11,13,16,15)(18,23)(21,24)(25,28)(29,31)(1,3,6,5)(2,8,4,7)(9,10)(11,13)(12,14)(15,16)(18,23)(19,26)(25,28)(27,32)(9,11,12,16)(10,13,14,15)(17,19,22,26)(18,24,23,21)(20,27,30,32)(25,31,28,29)(1,4,6,2)(3,7,5,8)(17,20)(18,25)(19,27)(21,29)(22,30)(23,28)(24,31)(26,32)(1,5,6,3)(2,7,4,8)(17,21,22,24)(18,26,23,19)(20,29,30,31)(25,32,28,27)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.