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