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