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