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