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