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