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