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