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