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