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