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