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