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