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