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