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