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