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