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