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