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