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