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