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