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