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