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