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