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