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)(17,18)(19,27,30,24)(20,25)(21,23)(22,26)(28,31,29,32)(1,3)(2,4)(5,14)(6,10)(7,16)(8,12)(9,15)(11,13)(18,23)(20,21)(24,31)(25,26)(27,32)(28,29) involution — undirected(1,4)(2,3)(5,11)(6,12)(7,9)(8,10)(13,14)(15,16)(17,19,22,30)(18,24,26,27)(20,28,21,29)(23,31,25,32)(1,5,6,15)(2,7,8,13)(3,9,10,14)(4,11,12,16)(17,20,22,21)(18,23,26,25)(19,28,30,29)(24,31,27,32)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.