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