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