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