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