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)(17,18,23,25)(19,24,22,26)(20,21,29,32)(27,28,30,31)(1,3)(2,4)(5,6)(7,8)(9,11,14,15)(10,12,16,13)(17,19,23,22)(18,24,25,26)(20,27,29,30)(21,28,32,31)(1,4)(2,6)(3,8)(5,7)(9,12,14,13)(10,15,16,11)(18,25)(20,29)(24,26)(27,30)(1,3)(2,7)(4,8)(5,6)(9,12,14,13)(10,11,16,15)(17,20)(18,21)(19,27)(22,30)(23,29)(24,28)(25,32)(26,31)(1,3)(2,4)(5,6)(7,8)(9,10)(11,12)(13,15)(14,16)(17,21)(18,20)(19,28)(22,31)(23,32)(24,27)(25,29)(26,30) involution — undirected(1,4)(2,6)(3,8)(5,7)(9,13,14,12)(10,11,16,15)(17,22,23,19)(18,26,25,24)(20,30,29,27)(21,31,32,28)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.