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