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