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