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