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