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