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)(18,23)(19,25)(24,31)(26,28)(33,34,38,36)(35,41,43,39)(37,44,46,40)(42,47,45,48)(1,2,6,3)(4,9,11,7)(5,8,13,10)(12,15,16,14)(17,18)(19,21)(20,24)(22,23)(25,30)(26,29)(27,31)(28,32)(34,36)(39,41)(40,44)(47,48)(2,3)(4,11)(5,13)(14,15)(19,25)(20,27)(21,30)(24,31)(33,35,38,43)(34,39,36,41)(37,45,46,42)(40,48,44,47)(1,3,6,2)(4,7,11,9)(5,10,13,8)(12,14,16,15)(17,19)(18,21)(20,28)(22,25)(23,30)(24,32)(26,27)(29,31)(33,35)(34,39)(36,41)(37,42)(38,43)(40,47)(44,48)(45,46)(1,4)(2,7)(3,9)(5,12)(6,11)(8,14)(10,15)(13,16)(17,20)(18,24)(19,26)(21,29)(22,27)(23,31)(25,28)(30,32)(33,36,38,34)(35,39,43,41)(37,44,46,40)(42,47,45,48)(1,5,6,13)(2,8,3,10)(4,12,11,16)(7,14,9,15)(17,21)(18,19)(20,29)(22,30)(23,25)(24,26)(27,32)(28,31)(33,37,38,46)(34,40,36,44)(35,42,43,45)(39,47,41,48)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.