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