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