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