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