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