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