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