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