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