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