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