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