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