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