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)(33,34,37,41)(35,40,43,38)(36,44,45,39)(42,46,48,47)(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)(33,35,37,43)(34,38,41,40)(36,42,45,48)(39,46,44,47)(2,9)(3,4)(10,16)(11,12)(33,36,37,45)(34,39,41,44)(35,42,43,48)(38,46,40,47)(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)(34,39)(35,42)(37,45)(38,46)(40,47)(41,44)(43,48)(1,5,7,14)(2,10,9,16)(3,11,4,12)(6,15,8,13)(17,20,22,24)(18,25,23,19)(21,29,30,28)(26,27,31,32)(33,35)(34,40)(36,42)(37,43)(38,41)(39,47)(44,46)(45,48)(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)(33,34)(35,38)(36,39)(37,41)(40,43)(42,46)(44,45)(47,48)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.