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