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