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