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