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