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