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