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