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