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)(19,20)(21,26)(22,23)(24,27)(25,30)(28,32)(29,31)(1,3,4,8)(2,5,6,7)(9,11)(10,14)(12,15)(13,16)(17,19,21,28,24,31,23,30)(18,25,22,29,27,32,26,20)(2,6)(3,8)(9,12,13,10)(11,15,16,14)(17,20)(18,19)(21,25)(22,28)(23,32)(24,29)(26,30)(27,31)(2,6)(3,8)(11,16)(14,15)(17,21,24,23)(18,26,27,22)(19,28,31,30)(20,32,29,25)(2,6)(5,7)(17,22,21,27,24,26,23,18)(19,29,28,32,31,20,30,25)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.