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