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