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