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