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