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