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