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