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