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