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