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