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