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