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)(11,14)(12,13)(15,16)(17,18,23,27)(19,24,31,38)(20,25,33,42)(21,34,22,26)(28,36,30,39)(29,37,44,48)(32,41,35,40)(43,46,45,47)(10,13)(11,15)(17,19,23,31)(18,24,27,38)(20,29,33,44)(21,30,22,28)(25,37,42,48)(26,36,34,39)(32,43,35,45)(40,47,41,46)(2,6)(7,8)(9,11,12,15)(10,14,13,16)(19,28)(21,22)(24,36)(26,34)(29,43)(30,31)(32,35)(37,46)(38,39)(40,41)(44,45)(47,48)(1,3,5,4)(2,7,6,8)(10,13)(14,16)(17,20)(18,25)(19,29)(21,35)(22,32)(23,33)(24,37)(26,41)(27,42)(28,43)(30,45)(31,44)(34,40)(36,46)(38,48)(39,47)(1,4,5,3)(2,8,6,7)(17,21)(18,26)(20,32)(22,23)(24,38)(25,40)(27,34)(28,30)(29,44)(33,35)(41,42)(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.