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