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