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