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