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