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