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