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