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