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