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