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