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