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