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