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