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