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