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