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