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