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