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