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