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