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