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