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