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