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