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