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