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