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