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