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