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