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