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