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