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