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