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