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