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