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