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