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