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