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