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)(17,18,23,25)(19,24,20,22)(21,29,30,26)(27,32,28,31)(1,3)(2,4)(5,8)(6,7)(9,11,13,16)(10,14,12,15)(17,19,23,20)(18,24,25,22)(21,27,30,28)(26,31,29,32)(1,4,6,5)(2,3,8,7)(9,10,13,12)(11,14,16,15)(18,25)(19,20)(21,30)(31,32)(1,3)(2,5)(4,8)(6,7)(17,20,23,19)(18,24,25,22)(21,28,30,27)(26,31,29,32)(1,3)(2,4)(5,8)(6,7)(17,21)(18,26)(19,27)(20,28)(22,32)(23,30)(24,31)(25,29) involution — undirected(1,5,6,4)(2,7,8,3)(9,12,13,10)(11,15,16,14)(17,22,23,24)(18,19,25,20)(21,31,30,32)(26,28,29,27)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.