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