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