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