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