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