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