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