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