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