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