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