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