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