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