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