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)(19,23)(20,24)(21,22)(25,30)(26,29)(27,28)(31,32)(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)(23,29)(24,27)(30,31)(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)(20,27)(21,22)(24,28)(25,31)(26,29)(30,32)(33,35,37,43)(34,39,38,41)(36,45,46,42)(40,48,44,47)(9,12,13,16)(10,14,11,15)(17,19,21,26)(18,23,22,29)(20,25,28,32)(24,30,27,31)(33,34)(35,39)(36,40)(37,38)(41,43)(42,47)(44,46)(45,48)(1,3)(2,6)(4,7)(5,8)(17,20)(18,24)(19,25)(21,28)(22,27)(23,30)(26,32)(29,31)(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.