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