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