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