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