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