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