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