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