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