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