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