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