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