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