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