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