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