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