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