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