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