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