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