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