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