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