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