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