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