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