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