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