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