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)(19,29)(20,26)(21,28)(22,24)(23,27)(25,32)(30,44)(31,45)(33,39)(34,48)(35,43)(36,42)(37,38)(40,47)(41,46)(1,3,6,2)(4,7,5,8)(9,11)(10,14)(12,16)(13,15)(18,24)(19,30)(20,33)(27,28)(32,37)(35,36)(40,41)(45,48)(10,12)(11,15)(17,19,22,30)(18,25,24,38)(20,34,33,31)(21,32,23,37)(26,41,39,40)(27,29,28,44)(35,47,36,46)(42,45,43,48)(1,4,6,5)(2,7,3,8)(9,12,13,10)(11,14,15,16)(17,20,22,33)(18,26,24,39)(19,31,30,34)(21,36,23,35)(25,40,38,41)(27,43,28,42)(29,45,44,48)(32,47,37,46)(1,5,6,4)(2,7,3,8)(11,15)(14,16)(17,21,22,23)(18,27,24,28)(19,32,30,37)(20,35,33,36)(25,29,38,44)(26,42,39,43)(31,46,34,47)(40,48,41,45)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.