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)(17,18,22,27,23,28,19,24)(20,31,29,39,33,42,36,25)(21,26,35,41,34,40,30,37)(32,44,43,47,45,48,46,38)(1,2)(3,6)(4,8)(5,7)(9,11)(10,13)(12,16)(14,15)(17,19,23,22)(18,24,28,27)(20,29,33,36)(21,30,34,35)(25,31,39,42)(26,37,40,41)(32,43,45,46)(38,44,47,48)(11,16)(13,15)(17,20,23,33)(18,25,28,39)(19,29,22,36)(21,32,34,45)(24,31,27,42)(26,38,40,47)(30,43,35,46)(37,44,41,48)(1,3,5,4)(2,6,7,8)(10,14)(13,15)(17,21,23,34)(18,26,28,40)(19,30,22,35)(20,32,33,45)(24,37,27,41)(25,38,39,47)(29,43,36,46)(31,44,42,48)(1,4,5,3)(2,6,7,8)(21,34)(26,40)(30,35)(32,45)(37,41)(38,47)(43,46)(44,48)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.