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