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