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)(11,15)(12,16)(13,14)(17,18,21,22)(19,23,24,20)(26,30)(27,32)(2,6)(3,7)(9,11,13,16)(10,12,14,15)(17,19,21,24)(18,20,22,23)(26,30)(27,32)(2,6)(4,8)(10,14)(12,15)(18,22)(19,24)(25,26)(27,31)(28,32)(29,30) involution — undirected(1,3,5,7)(2,4,6,8)(9,11)(10,15)(12,14)(13,16)(17,20)(18,19)(21,23)(22,24)(25,27,29,32)(26,31,30,28)(1,4)(2,7)(3,6)(5,8)(9,12,13,15)(10,11,14,16)(17,18)(19,20)(21,22)(23,24)(25,28,29,31)(26,32,30,27)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.