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