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