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