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