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