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