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