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