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