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