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