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