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