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