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)(18,23)(19,26)(21,29)(28,31)(33,34)(35,45)(36,41)(37,47)(38,42)(39,43)(40,44)(46,48) involution — undirected(3,9)(7,13)(10,15)(14,16)(17,18,22,23)(19,20,26,24)(21,25,29,30)(27,28,32,31)(33,35)(34,39)(36,46)(37,38)(40,43)(41,42)(44,45)(47,48)(2,6)(7,13)(8,11)(14,16)(17,19,22,26)(18,24,23,20)(21,27,29,32)(25,31,30,28)(33,36,40,37)(34,41,44,47)(35,46,43,38)(39,42,45,48)(1,2)(3,7)(4,8)(5,6)(9,13)(10,14)(11,12)(15,16)(17,19)(18,20)(21,27)(22,26)(23,24)(25,28)(29,32)(30,31)(33,37,40,36)(34,41,44,47)(35,46,43,38)(39,48,45,42)(1,3,5,9)(2,7,6,13)(4,10,12,15)(8,14,11,16)(17,20)(18,19)(21,28)(22,24)(23,26)(25,27)(29,31)(30,32)(33,38,40,46)(34,42,44,48)(35,37,43,36)(39,41,45,47)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,21,22,29)(18,25,23,30)(19,27,26,32)(20,28,24,31)(33,39,40,45)(34,43,44,35)(36,42,37,48)(38,47,46,41)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.