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