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