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