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