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