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)(17,18,22,24)(19,27,29,23)(20,25,28,32)(21,30,31,26)(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)(17,19,22,29)(18,23,24,27)(20,21,28,31)(25,26,32,30)(33,35,39,45)(34,40,43,48)(36,44,46,38)(37,42,41,47)(2,3)(7,9)(8,10)(14,15)(18,24)(23,27)(25,32)(26,30)(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)(17,18)(19,23)(20,25)(21,26)(22,24)(27,29)(28,32)(30,31)(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)(17,20)(18,25)(19,21)(22,28)(23,26)(24,32)(27,30)(29,31)(33,37)(34,36)(35,42)(38,48)(39,41)(40,44)(43,46)(45,47)(1,5)(2,8)(3,10)(4,11)(6,13)(7,14)(9,15)(12,16)(17,21)(18,26)(19,28)(20,29)(22,31)(23,32)(24,30)(25,27)(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.