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