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