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