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