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