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