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