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