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