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