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