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