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