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