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