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