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