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