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