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