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