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