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)(17,18,23,26)(19,24,21,22)(20,25,29,32)(27,31,30,28)(34,39)(36,44)(40,48)(41,45)(1,2,6,3)(4,9,12,7)(5,8,13,10)(11,15,16,14)(17,19,23,21)(18,24,26,22)(20,27,29,30)(25,31,32,28)(33,34)(35,40)(36,37)(38,39)(41,46)(42,45)(43,48)(44,47)(2,3)(7,9)(8,10)(14,15)(19,21)(22,24)(27,30)(28,31)(33,35,38,43)(34,40,39,48)(36,41,44,45)(37,46,47,42)(1,3,6,2)(4,9,12,7)(5,10,13,8)(11,15,16,14)(17,20,23,29)(18,25,26,32)(19,27,21,30)(22,28,24,31)(33,36)(34,37)(35,41)(38,44)(39,47)(40,46)(42,48)(43,45)(1,4,6,12)(2,7,3,9)(5,11,13,16)(8,14,10,15)(17,21,23,19)(18,22,26,24)(20,27,29,30)(25,31,32,28)(33,35)(34,40)(36,45)(37,42)(38,43)(39,48)(41,44)(46,47)(1,5,6,13)(2,8,3,10)(4,11,12,16)(7,14,9,15)(17,22)(18,19)(20,28)(21,26)(23,24)(25,27)(29,31)(30,32)(33,37)(34,36)(35,42)(38,47)(39,44)(40,45)(41,48)(43,46)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.