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