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