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