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