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