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