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