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