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