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