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