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