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