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