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