One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,9)(5,7)(6,10)(11,14)(12,16)(13,15)(17,18,21,24)(19,22,26,29)(20,23,27,30)(25,31,32,28)(33,34,37,40)(35,41,43,48)(36,44,46,39)(38,45,47,42)(2,7)(4,5)(8,14)(9,10)(11,13)(15,16)(17,19)(18,22)(20,25)(21,26)(23,28)(24,29)(27,32)(30,31) involution — undirected(1,3)(2,8)(4,13)(5,11)(6,12)(7,14)(9,15)(10,16)(17,20)(18,23)(19,25)(21,27)(22,28)(24,30)(26,32)(29,31)(33,35,37,43)(34,38,40,47)(36,45,46,42)(39,48,44,41)(1,4,6,5)(2,9,10,7)(3,11,12,13)(8,14,16,15)(19,26)(22,29)(25,32)(28,31)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.