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