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