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