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