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