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