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