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