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