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