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