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