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