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)(17,18,22,25)(19,23,26,21)(20,24,28,31)(27,29,32,30)(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)(21,25)(22,26)(24,29)(28,32)(30,31)(33,35,38,36)(34,39,41,42)(37,43,46,44)(40,47,45,48)(2,6)(3,10)(4,13)(14,15)(19,26)(20,28)(21,23)(24,31)(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)(17,20)(18,24)(19,27)(21,30)(22,28)(23,29)(25,31)(26,32)(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)(17,21,22,23)(18,19,25,26)(20,29,28,30)(24,32,31,27)(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)(17,19)(18,23)(20,27)(21,25)(22,26)(24,29)(28,32)(30,31)(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.