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