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