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