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