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