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