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)(35,36)(37,41)(38,46)(39,40)(42,47)(43,48)(44,45)(4,11)(7,9)(12,16)(14,15)(17,18,21,22)(19,23,26,30)(20,24,29,27)(25,31,28,32)(34,40)(36,41)(42,46)(44,48)(2,3)(7,9)(8,10)(14,15)(18,22)(23,30)(24,27)(31,32)(33,35,39,37)(34,41,40,36)(38,43,47,45)(42,48,46,44)(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)(33,36,39,41)(34,35,40,37)(38,44,47,48)(42,43,46,45)(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)(34,41,40,36)(38,43,47,45)(42,44,46,48)(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)(33,38,39,47)(34,42,40,46)(35,43,37,45)(36,44,41,48)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.