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