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