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