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