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