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