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