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