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