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