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