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