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