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