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