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