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