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