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