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