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